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Open data
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Basic information
| Entry | Database: PDB / ID: 5xth | ||||||||||||||||||
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| Title | Cryo-EM structure of human respiratory supercomplex I1III2IV1 | ||||||||||||||||||
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Keywords | OXIDOREDUCTASE/ELECTRON TRANSPORT / Homo sapiens / Oxidoreductase / Respiratory / Supercomplex / ELECTRON TRANSPORT / OXIDOREDUCTASE-ELECTRON TRANSPORT complex | ||||||||||||||||||
| Function / homology | Function and homology informationComplex III assembly / Complex III assembly / Complex III assembly / Complex III assembly / Complex III assembly / response to D-galactosamine / Complex III assembly / response to cobalamin / : / Complex III assembly ...Complex III assembly / Complex III assembly / Complex III assembly / Complex III assembly / Complex III assembly / response to D-galactosamine / Complex III assembly / response to cobalamin / : / Complex III assembly / Complex III assembly / Complex III assembly / Complex IV assembly / TP53 Regulates Metabolic Genes / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / response to mercury ion / Complex I biogenesis / respiratory chain complex IV assembly / subthalamus development / pons development / Cytoprotection by HMOX1 / Respiratory electron transport / protein insertion into mitochondrial inner membrane / mitochondrial respirasome assembly / mitochondrial respiratory chain complex III assembly / cerebellar Purkinje cell layer development / mitochondrial processing peptidase complex / thalamus development / Respiratory electron transport / pyramidal neuron development / respiratory chain complex IV / response to alkaloid / response to glucagon / mitochondrial large ribosomal subunit assembly / mitochondrial ATP synthesis coupled electron transport / protein lipoylation / cellular response to oxygen levels / Mitochondrial ribosome-associated quality control / Mitochondrial protein import / respiratory chain complex / Mitochondrial translation termination / mitochondrial [2Fe-2S] assembly complex / mitochondrial large ribosomal subunit binding / ubiquinone biosynthetic process / neural precursor cell proliferation / gliogenesis / Mitochondrial translation termination / cytochrome-c oxidase / negative regulation of non-canonical NF-kappaB signal transduction / cellular respiration / respiratory chain complex III / cardiac muscle tissue development / mitochondrial electron transport, cytochrome c to oxygen / quinol-cytochrome-c reductase / oxidative phosphorylation / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / positive regulation of mitochondrial membrane potential / [2Fe-2S] cluster assembly / oxygen sensor activity / quinol-cytochrome-c reductase activity / midbrain development / azurophil granule membrane / cytochrome-c oxidase activity / mitochondrial electron transport, ubiquinol to cytochrome c / sodium ion transport / response to copper ion / iron-sulfur cluster assembly / acyl carrier activity / oxidoreductase activity, acting on NAD(P)H / Mitochondrial protein degradation / NADH:ubiquinone reductase (H+-translocating) / ubiquinone binding / animal organ regeneration / mitochondrial electron transport, NADH to ubiquinone / regulation of protein phosphorylation / positive regulation of ATP biosynthetic process / proton motive force-driven mitochondrial ATP synthesis / electron transport coupled proton transport / hypothalamus development / acyl binding / mitochondrial respiratory chain complex I assembly / NADH dehydrogenase activity / RHOG GTPase cycle / response to hyperoxia / response to cadmium ion / cerebellum development / reactive oxygen species metabolic process / respiratory chain complex I / NADH dehydrogenase (ubiquinone) activity / positive regulation of execution phase of apoptosis / response to cAMP / quinone binding / cellular response to interferon-beta / endopeptidase activator activity / neurogenesis / cellular response to retinoic acid / ATP synthesis coupled electron transport / negative regulation of reactive oxygen species biosynthetic process / enzyme regulator activity Similarity search - Function | ||||||||||||||||||
| Biological species | Homo sapiens (human)![]() | ||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | ||||||||||||||||||
Authors | Gu, J. / Wu, M. / Yang, M. | ||||||||||||||||||
| Funding support | China, 5items
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Citation | Journal: Cell / Year: 2017Title: Architecture of Human Mitochondrial Respiratory Megacomplex IIIIIV. Authors: Runyu Guo / Shuai Zong / Meng Wu / Jinke Gu / Maojun Yang / ![]() Abstract: The respiratory megacomplex represents the highest-order assembly of respiratory chain complexes, and it allows mitochondria to respond to energy-requiring conditions. To understand its architecture, ...The respiratory megacomplex represents the highest-order assembly of respiratory chain complexes, and it allows mitochondria to respond to energy-requiring conditions. To understand its architecture, we examined the human respiratory chain megacomplex-IIIIIV (MCIIIIIV) with 140 subunits and a subset of associated cofactors using cryo-electron microscopy. The MCIIIIIV forms a circular structure with the dimeric CIII located in the center, where it is surrounded by two copies each of CI and CIV. Two cytochrome c (Cyt.c) molecules are positioned to accept electrons on the surface of the c state CIII dimer. Analyses indicate that CII could insert into the gaps between CI and CIV to form a closed ring, which we termed the electron transport chain supercomplex. The structure not only reveals the precise assignment of individual subunits of human CI and CIII, but also enables future in-depth analysis of the electron transport chain as a whole. | ||||||||||||||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 5xth.cif.gz | 2.6 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb5xth.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 5xth.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/xt/5xth ftp://data.pdbj.org/pub/pdb/validation_reports/xt/5xth | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 6775MC ![]() 6771C ![]() 6772C ![]() 6773C ![]() 6774C ![]() 6776C ![]() 5xtbC ![]() 5xtcC ![]() 5xtdC ![]() 5xteC ![]() 5xtiC M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
+NADH dehydrogenase [ubiquinone] flavoprotein ... , 3 types, 3 molecules AKO
+NADH dehydrogenase [ubiquinone] iron-sulfur protein ... , 7 types, 7 molecules BCLPQTh
+NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit ... , 12 types, 12 molecules EFHIJNSUVWuw
+Protein , 4 types, 7 molecules GXMAHAUAJAV
+NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit ... , 11 types, 11 molecules YZabcdenopv
+NADH dehydrogenase [ubiquinone] 1 subunit ... , 2 types, 2 molecules fg
+NADH-ubiquinone oxidoreductase chain ... , 7 types, 7 molecules ijklmrs
+Cytochrome c oxidase subunit ... , 13 types, 13 molecules xyz0123456789
+Cytochrome b-c1 complex subunit ... , 9 types, 18 molecules AAANABAOACAPADAQAEARAFASAGATAKAWALAY
+Non-polymers , 14 types, 63 molecules 


























+Details
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Human respiratory supercomplex I1III2IV1 / Type: COMPLEX / Entity ID: #1-#68 / Source: NATURAL |
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| Molecular weight | Value: 1.7 MDa / Experimental value: YES |
| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.4 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 1.25 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
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Processing
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| CTF correction | Type: NONE | ||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 167761 / Symmetry type: POINT |
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About Yorodumi




Homo sapiens (human)

China, 5items
Citation
UCSF Chimera


















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